diff --git a/include/common.h b/include/common.h
index c8504cd..a1de242 100644
--- a/include/common.h
+++ b/include/common.h
@@ -631,6 +631,15 @@ extern s32 D_800AF0B0;
 extern void Unpack(s32, s32); 
 extern OSMesgQueue MQ_800AF320;
 
+typedef struct {
+        /* 0x00 */ s32 field_0x0;
+        /* 0x04 */ OSMesgQueue* queue;
+        /* 0x08 */ u8 format;
+        /* 0x09 */ u8 field_0x9[3];
+        /* 0x0C */ s32 field_0xc;
+        /* 0x10 */ s32 field_0x10;
+} OBUnpackMesg;
+
 extern u32 obCurrentTime;
 extern void obSetCurrentTime(u32 time);
 extern u32 obGetCurrentTime();
diff --git a/src/_ob_rabid_jar.c b/src/_ob_rabid_jar.c
index f89607e..3102daa 100644
--- a/src/_ob_rabid_jar.c
+++ b/src/_ob_rabid_jar.c
@@ -453,16 +453,8 @@ INCLUDE_ASM(const s32, "_ob_rabid_jar", func_8007ABAC);
 
 /* B030 8007AC30 */
 void UnpackProc(void) {    
-    struct {
-        /* 0x00 */ s32 field_0x0;
-        /* 0x04 */ OSMesgQueue* queue;
-        /* 0x08 */ u8 format;
-        /* 0x09 */ u8 field_0x9[3];
-        /* 0x0C */ s32 field_0xc;
-        /* 0x10 */ s32 field_0x10;
-    } *pack;
+    OBUnpackMesg *pack = NULL;
 
-    pack = NULL;
     while(1) {
         osRecvMesg(&MQ_800AF320, (OSMesg)&pack, 1);
         if (pack->format == 1) {